Finishing machine



July 4, 1950 w. J. HELDENBRAND 2,513,799

FINISHING MACHINE Filed April 15, 1948 8 Sheets-Sheet 2 INVENTOR. WARRENd. HELDENBRAND AT b12575) 1950 w. J. HELDENBRAND 2,513,799

FINISHING MACHINE Filed April 13, 1948 s SheetsSheet 5 FIG. 22

225 INVENTOR.

. I6"! I66 /63 WAR EN d. HELDENBRAND V ///A f z: i' ATTORNEY y 4, 1950w. J. HELDENBRAND 2,513,799

FINISHING MACHINE Filed April 13, 1948 8 Sheets-Sheet 5 @V o 1 u w" j IZ r V H6 "L1 III 10/ 11/ 1/ 1 1 11/ l I IIIIIQLll/IIIIIIII INVENTOR.WARREN d. HELDENBRAIID j ATTORNEY July 4,' 1950 W. J. HELDENBRANDFINISHING MACHINE Filed April 13, 1948 8 Sheets-Sheet 6 FIG. 10 r 4,4444 44 44444 INVENTOR y 1950 w. J. HELDENBRAND 2,513,799

FINISHING MACHINE Filed April 15, 1948 8 Sheets-Sheet s- Fxa. 33 1.1 1.2L3

I I I I I I I l I l- INVEN TOR. WARREN c]. HELDENBRAND ATToR HEYPatented July 4, 1950 UNITED STATES PATENT OFFICE Claims.

Thi invention relates to improvements in machines intended for finishingof articles of flat ware. It has especial reference to a machine of thistype wherein the ware is subjected to the action of opposed buffs.

Incidental to the fact that contours of articles as forks, spoons andthe like, are sinuous, a diiiiculty encountered in the use of machinesas hitherto devised is, that the effect of the buffs upon said contoursis not uniform, and the finish imparted by the use of such machines isunsatisfactory.

Advantages desired in the procedure of finishing articles of the abovedescription are, that the finish must be consistent with the quality ofthe article, and with the contours thereof, and it must be so impartedthat it is uniform in quality throughout the full extent of the surfacestreated; and also, that the articles may be treated in quantity and withefficiency making for economy and minimum cost,

To provide a machine for attaining the above named advantages is theobject broadly stated, of my invention. The said general object, andalso certain other and specific aims of my invention as will presentlyappear, are accomplished by, and my invention is embodied in the newconstruction, combination and arrangement of parts described in thefollowing specification and illustrated in the accompanying drawings.

The several parts of my invention, as they appear in the different viewsin the drawings are identified by suitable characters of reference. Inthe said drawings;

Figure 1 is a front view of my new vertical finishing machine.

Figure 2 is a top plan view of said machine, a portion of the top of theframe broken away, and the cross beam being shown partially in crosssection.

Figure 3 is a side view in the direction of arrow 3 in Figure 1, aportion of the obverse side of the hood being broken away disclosing toview the ends of the buff carriages.

Figure 4 is a rear view in the direction of arrow 4 in Figure 3,indicating the relative locations of the several hydraulic, electric andcompressed air units, and piping and wiring therefor bein indicatedfragmentarily.

Figure 5 is a sectional top plan view in direction of arrow 5 on brokenline 5-5 in Figure 4.

Figure 6 is an enlarged front View of the machine, the hood sectionsremoved, and a portion of the frame of the machine shown in crosssection.

Figure 7 is an enlarged top plan view taken on broken line 1--'! in thedirection of arrow 1 in Figure 3, the suspensor devices on the faceplate being broken away.

Figure 8 is an enlarged side View of the upper portion of the machine,being shown in crosssection on broken line 8-8, and the lower portion ofthe machine being shown in cross-sections on line 8a8a, in the directionof arrow 8 in Figure 7.

Figure 9 is a vertical cross-section view on broken line 9--9 in thedirection of arrow 9 in Figure 6.

Figure 10 is a sectional top plan view on broken line Ill-40 in Figure3.

Figure 11 is a sectional top plan view on broken line H-ll in Figure 8,to show the lever wrists that cooperate with the templets.

Figure 12 is a vertical cross section view on broken line l2-|2 inFigure 8, to show the inner face of the rear buff carriage and dischargechute,

Figure 13 is a vertical longitudinal sectional view on broken line |3-l3in direction of arrow I3 in Figure 11, to show the left-hand racks andpinions.

Figure 14 is a vertical longitudinal sectional view on broken line l4l4,in the direction of arrow H in Figure 11, to show the right-hand racksand pinions.

Figure 15 is an enlarged detail view of the templet cross head, andcontour templet connected therewith.

Figure 16 is an end view of Figure 15, in the direction of arrow l6.

Figure 17 is a detail plan view of the head or chuck end of one buffmandrel, and of the tail end of the other buff mandrel.

Figure 18 is an enlarged detail side view of the divided bearing fortail journal of buff mandrel.

Figure 19 is a detail side view of Vertical bar and trips 25 carried bythe cross beam of the machine, and as shown in Figure 4.

Figure 20 is a top plan view of Figure 19.

Figure 21 is an end view of pilot valve and dogs shown in Figure 19.

Figure 22 is a detached top plan view of left hand end portion ofcarrier plate llil and the suspensor bracket fixture attached thereto.

Figure 23 is a vertical cross-section View on the broken line 23-23 inFigure 22.

Figure 24 is a side view of work rack adapted for the retention of ware,as forks and the like.

3 V Figure 25 is an enlarged cross-section view on broken line 2'525 inFigure 24.

Figure 26' is an enlarged view of parts indicated 1 in Figure 24:.

Figure 30 is a view in the direction of arrow.

30 in Figure 28.

Figure 31 is a diagrammatic view indicating the hydraulic system throughwhichthe. power is supplied and controlled for operating the cross,beam, face plate and carrier plate.

Figure 32 is a diagrammatic view indicating the compressed air systemthrough which power; is suppliedandcontrolled foroperating the cylindershaving connection with the buff carriages. Figure 33 is a diagram of theelectric system for operating the motors.

The frame of the machine comprises a deck plate 3-! preferably of steeland or suitable planformation (as illustrated in Figure 7) integratedwith girders 32, supported by legs 33; and suit-- ably stayed as bybraces 36. Upon said deck is a'housing 39-upon-which is integrated atowerlike structure embodying-spaced uprights M and iZ.

As indicated in Figures l, 11, 13 and 14 ofthe drawings, a rack rod i i(atleft hand side of the machine) slidable verticallyina suitableguideway therefor in column 65 meshes with a.

pinion 46' that is interconnected by a common axle to a similar pinion.liia. A rack rod 5 (at right hand'side of the machine) slidablevertically in a suitable guideway therefor in column 55' meshes with apinion 56 that is interconnected by a common axle to a similar pinion56a. The said rack rods M and 54 the upper ends of which are furtherreferred to.

, threaded, and the said pinions, will'pres entlybe ,Secured to an.upright back plate 48 that is' integrated withribs 19 which extend fromthe rear sides of said uprights ll and 42., is. a vertical hydrauliccylinder 5!, the inlet and exhaust pipes therefor designated 52 and 53respectively. See Figure 31'. The outward end portion of the-upwardlydirected piston rod 59' of said cylinder is threaded.

A cross beam 61 with rearwardly ofiset median portion 62 embodies atitsfends, rearwardly directed brackets 64 and M- each havinga verticalbore. In thebores of these brackets are received the upper end portionsof the aforesaidrackrods' M and 54 and whichare securediin thepositions. to which they are adjusted, by lock nuts 65'.

The piston rod 59. of said vertical cylinder is secured as by lugfixture G7 to the said cross beam, as indicated inF-igure 9. Secured tothe rear face of said cross beam, at each side of the offset medianportion thereof, and arranged one above the other, are bracketslQan-d'l'i each provided with a vertical bore. See Figure 3' and 1Figure 8. Receivedin the bores of these brackets are vertical slide rodsl2 which are secured at their ends to anchor blocks 13 and i5. that inturn are secured to the faces of the uprights 4'1 and 42 as. shown inFigure 8. The said cross beam 6i so arranged in. connection with thesliderods l2 and with the piston of the said vertical cylinder 4 5| is,together with the rack rods 44 and '54, vertically reciprocable.

Secured to the frontal face of the rearwardly offset median portion 62of said cross beam, is a horizontal hydraulic cylinder 8| through whoseopposite ends pass the piston rods 82 and 83 the outward ends of whichare threaded as indicated in Figure 10. Secured to the ends of saidpiston rods as by head blocks 84 is a vertical rectangular face-plate38. At positions. equidistant from the vertical center of the rear sideof said face plate are brackets Bil, one above the other (see Figures '7and 8) each with a horizontal bore. Transverse horizontal slide rods 9!received in the bores ofsaid brackets have their ends secured to an chorblocks 94 which in turn are secured to the frontal. face of the saidcross beam 6!. Projecting forwardly from the top portion of said faceplate 88 is a lug 95 (as indicated in Figure 3 and Figure 8) throughwhich is threaded a vertical adjusting screw 98: The said face plate 88so arranged and interconnected with the pistons of the horizontalcylinder 8l- (Figure 10) and with the slide rods 91' (Figure. '7) istransversely reciprocable.

An elongated'carrier, plate- I01 (see Figures 1 and 6) has a' frontallug N12 with threaded hole in which the saidscrevr 96 is received. Slideblocks [63 (see Figure 10.) that are provided at the rear' side oftheend portions'of saidicarrier plate engage the ends of said faceplateBt. The

said carrier plate so arranged is capable of being disposed in andheldat vertically adjusted position on the said face plate,

On the'frontal face of saidcarrier plate I01 at positions equidistantfrom its vertical center, are brackets i951 and Hit. The leg of one ofthese brackets namelm bracket N55, is provided with a vertical:- slotthrough which set screws iii? are passed and are screwed into the faceof'said carrier plate. A fixture. lilfliis secured to the face ofsaidjcarrier plate withiits opposed arms above and below the baseportion of said bracket I85, as indicated in Figure 23; By means of'setscrews m9 and H0 in said arms the said bracket may be moved to preciselyadjusted" position vertically and in which said adjustedposition it ismade secure by tightening the set-screws I91.

Depending from-a crosspin H2 in eachof saidl Opposed structures.substantial in weight and mass, preferably of'cast iron, Id'esignate asbuff carriages.

ribs 123a and horizontaliribs. I25. asindicated in Figure 6, Figure 11'.and'Figure. 12. The lug of each carriage is journaled' on a. shaft [26that is rigidly secured in a support block l2ii'a; The lugs i2 i;of eachcarriage are jiourna'led' on a shaft l2? that is rigidlysecuredinwasupport.block. iZ-Ta. Projecting from the. arm 'of'each of.said end ribs is a horizontal pin I311, as shown in Figure.6 and.

in Figure 11.

The left hand endof. one carriage. (frontal car.- riage l2!) and theright hand end; of the other carriage (rear carriage I22) embodies atits upper. portion, a divided pillow block with upper part Theyconsist-0f transverse. elongated plates 1 2"! and I QZembod'ying alignedbottom lugs. l23 l2. l and integraliext'erior spaced vertical I32 hingedon pin I33 and fastened by set screws I34.

The right hand end rib of one carriage (carriage I2I) and the left handend rib of the other carriage (carriage I22) embodies at its upperportion, a longitudinal extension I36 (see Figure 6) which in turnembodies aligned bearings I31 and I38. In the bearings I31 and. I38 isjournaled a shaft I40 upon which is secured a pulley I4 I. The shaftI40, as indicated in detail at Figure 17, is provided with alongitudinal tapered socket I43.

Each of two similar bufis consists of a mandrel I44, one end thereofformed to fit in said socket I43 and there secured by axial bolt I49which extends through an axial bore therefor in said shaft I40, and theother end thereof, having a spindle I48 adapted to be seated in thelower half of pillow block I32. (See Figures 17-18.) The disks I45 ofmuslin or the like, together with intervening spacer washers I46 slippedon the mandrel are held securely clamped by a lock nut I41 at an end ofeach mandrel.

A lever I50 (see Figures 8 and 11) which embodies opposed lugs I5I andI52 (upper and lower respectively) in each of which is an adjustingscrew I53, is fulcrumed on shaft I21 and is disposed in positionadjacent the outer rib i230. of one of the carriages (carriage I2I); thepin I30 of arm of said rib I23a being in position between the ends ofsaid adjusting screws.

The lever I55 (see Figures 9, 11 and 12) which embodies opposed lugs I56and I51 (upper and lower respectively) in each of which is an adjustingscrew I58, is fulcrumed on the other shaft I 21 and is disposed inposition adjacent the outer rib I23a of the other carriage (carriageI22) the pin I30 of said rib being in position between the ends of saidadjusting screws I51 and I58. The free end, each, of said levers I50 andI55, is directed downwardly. (As indicated in Figure 8.)

A lever I60 disposed between the ribs I24 of each carriage is fulcrumedon shaft I21. The free ends of said levers I60 are directed downwardlyas indicated in Figure 9, to a point in registration with the plane ofthe centers of the free ends of levers I50 and I55. Interconnecting oneof said levers I60 and the lever I50; and interconnecting the other ofsaid levers I60 with the lever I55, at their free ends, is a cross shaftI62. Extending laterally from the free end each, of the levers I50 andI55 is a wrist I63 which embodies a pintle I66 upon which is journaled aroller I61. Each of the said central levers I60 embodies an upwardlydirected bifurcated lug I65 provided with cross pin I66.

Air cylinders U and V pivotally supported by hangers I1I at theunderside of deck 3| (pipes therefor designated I13 and I14) portionsthereof being flexible (see Figure 32), have their piston rods connectedas by links I16 to the said cross shafts I62. By control of the actionof the pistons of these cylinders, the buff carriages may be swungtoward each other and to advanced status (thereby placing the buffs inproximal positions) or may be swung from each other and to retractedstatus (thereby placing the buffs in remote positions).

Pivotally interconnecting the said carriages with the pins I66 of thelugs I65 of the central levers I60, are air cylinders W and X (seeFigure 9). These cylinders, their functions, and the flexible piping I18and I19 therefor will be presently referred to in diagram at Figure 32.

J ournaled in pillow blocks I8I and I82 that are anchored each to thedeck 3|, is shaft I84 (right) and upon which'said shaft issecur'edpulleyIBB which is integrated with pulley I81. Pulley I86 isconnected by belting I88 to electric motor A located underneath the deck3I. (See Figure 1 and Figure 6.) Pulley I81 is connected by beltingI89topulleyI4I.

Journaled in pillow blocks NH and I92 that are anchored each to deck 31,is shaft I94 (left) (see Figure 12) and upon which said shaft is securedpulley I96 which is integrated with pulley I91. Pulley I96 is connectedby belting I98 to electric motor B located underneath said deck. (SeeFigure 1 and Figure 12.) Pulley I91 is connected bybelting I99 to pulleyI42.

In a horizontal guideway provided in the housing which forms part of thelower portion of column 45 (at left hand side of machine) as indicatedat Figure 13, a rack bar 20I rides slidingly and in mesh with pinion 46aand at a plane above the axis of said pinion.

In a horizontal guideway of guide block 203 at left hand side of machine(see Figures '1, 13 and 15) is a slide 204 which is connected to saidrack bar 20I as by an extension 205 and lug parts 206.

In a horizontal guideway provided in housing which forms a part of lowerportion of column 55 (at right hand side of machine, as indicated byFigure 14) a rack-bar 2II rides slidingly and it is in mesh with thepinion 56a at a plane below the axis of said pinion.

In a horizontal guideway of a guide block 2I3 at right hand side ofmachine (see Figure 14) is a slide 2I4 which is connected to saidrack-bar 2I I as by cap screws 2 I 5.

The said guide blocks 203 and 2 I 3 are so located that the slides 204and 2I4 therein are in registration above and in alignment with therollers I61 of the wrists I63 of the levers I50 and I55. (See Figure11.) Each of these slides 204-2I4 (see Figures 15-16) is oflongitudinally divided formation. The upper section at its outboard endembodies a downwardly directed head 204a provided with an aperture forthe reception of an adjusting screw 228 and which is provided with setnuts 229.

Coincident with the upward movement of the rack-rods 44 (left) andrack-rods 54 (right) which operate in unison, there is rearward movementof left hand rack-bar 20I and there is forward movement of the righthand rack-bar 2I I.

For supporting in quantity, in position between the opposed buffs, thearticles which are to be subjected to the action of the buffs, I providea rack structure to accord with the type and form of article to beprocessed. For an article, as a fork, said rack structure is of formindicated in Figure 24. End plates 2 I1, held in spaced opposed relationby longitudinal rods 2I8, are provided with pintles 2 I 9 which areadapted to be reposed removably in the hooks I I3 and I I4 of thecarrier plate IOI. Each of the confronting faces of the downwardlydirected narrowed portions of said end plates, embodies a verticalflange 220, guideway block 22I and stirrup 222. Loose in said guidewayblock is latch bolt 223. Thin elongated cross bar 224 which is passedbetween tines of the fork (unfinished, its tines at their terminalportions being bridged by the usual web as indicated in Figure 27) oneor the other of the said latch bolts 223 having been shifted to thebroken line positions (see Figure 24), is disposed in position with itsends in the said stirrups 222 and against the flanges 220. The latchbolts are then s eed of 'movement of the cross beam 65). designates a.four-way pilot operating control returned to lowered position the. ends.of same making the said cross bar. 224 secure in its position and as it.appears in Figure 24.

Whereas in the rackstructure just described, the workholding elementconsists simply of a thin elongated cross bar, it will be understoodthat for the holding of articles as spoons .or the. like, a workholdingstructure: of modifiedi form, as indicated in Figures 28 and 29'isusedvTo cause a varying of the distance between the opposed buffs inaccordancev with the variation of the distance between the opposededges. of the work carried by the saidrack we provide on the bottom ofeach of the slides 204-2124 (see Figures 13 and 14) a templet 225 withprofile which is similar to the profile of said work. The said templetand which embodies a slide bar 225a is capable of being secured inprecisely adjusted position on said slide with relation to the work, asby screw 2.28 carried by said slide bar and which is. passed throughhead 284a of the .of the work, may exert a steady pressure against thework, the set screws I53'-I58 in the lugs of levers I59 and I55.respectively are adjusted so that there is a slight space I59 betweenthe ends of said set screws and the pins I30 of the buff carriages.

Air cylinders Wand X pivotallyconnected to the carriages I2I and I22respectively (pipes therefor designated il3IlQ) portion thereof beingflexible, have their piston rods connected by suitable pins to the lugsE65 of the levers I 60, as hereinbefore referred to.

Reference is now had to the elevational view of the machine as. in.Figure 4, and to the diagram of the hydraulic: system as in Figure 31. Kdesignates a control. valve (for speed of movement of face plate 88). Ldesignates a control valve (for M valve actuated by trips (see Figure19) whereby the desired length of stroke of the beam through controlvalve P is had. Trip 23.3. (upper) causes the beam to start upwardly;Trip 234 (lower) causes said beam to start downwardly.v F designates afour-way piston type cam. actuated valve (controlled by pilot valve M)and with flexible pipe connections 85, 35 to cylinder 8 I. R, S and Qdesignate operator operable regulation. valves. designates'aircontrolled four-way val v-e which isinter-connected by pipe Ill" tothecompressed air system (see Figure 32) in which. said air system is handcontrol valve G, reducing valve ing therefor, are indicated in diagramFigureBB'.

The broken lines in Figure 33 indicatethe confines of the usual boxes2:321), Ed t-b, Et'SbandZ-dfib '(see Figure 3) in which saidautomaticswitches are contained; The said start buttons and said 8 stop buttonsare indicated in Figure 1. The general wiring is carried in usual cablesas in Figures. 3 and 41 and the line wires LI, L2, L3, are carried. inthe usual cable (not shown) from source of current supply.

When G handle is moved from the neutral (Z) or closed position. (seeFigure 8) to position I, the buifs are caused to be swungto remotepositions indicated by the broken lines in Figure 8 where they rest-When G handle is moved from position I to position 2, the said buffs arecaused to be swung from said remote positions, to proximal positionsindicated by the solid lines in Figure 8, for work. At the same time,the cross beam ti and the face plate &8 will have been caused to be setin motion,

When G handle in then moved from position 2 back to position I, thebuffs are caused to be moved to retracted or remote positions, the crossbeam and face plate continuing in operation.

For describing a typical performance of my new machine an article, forexample, an unfinished fork of conventional type and form as indicatedat Figure 27 is shown. The contour templets 225 (see Figures 13, 14 and15) each with profile identical with the side contours of the saidarticle, are in'readiness, and same are secured as by cap screws 2 I6,to the slides 2M and 2 i4.

Valve Q is opened. Valve G is in closed status, its handle being inneutral or Z position, as in Figure 8.

In making ready for placing the machine in operation, the carriages aremanually swung from the broken line or" remote positions (see Figure 8)to the solid line or proximal positions. Then by adjusting the screwsI53l58 said carriages are set so that the distance between the buffs isin accord with the minimum of the various distances between the opposededges of the work. Then by adjusting the screws 22!) (see Figure 15) thetemplets are set at precisely true positions.

The work rack, with its hanger bar 221% loaded with unfinished forksclosely arranged in successive order, endto end of said bar, is thenmanually placed inposition with its pintles 2 i 9 in the hooks I I3 andIN of the carrier structure. By adjusting the screws its and lit of thefixture 138 the said rack is poised in parallelism with the buds, afterwhich the set-screws IQl' are tightened, thereby securing the bracketHi5 in its adins-ted position.

The length of the stroke and the speed of movement of thecross beamhaving been determined with regard to the contours of the work,adjustment of the trips and 23 are then made. Adjustment also is made atvalve K in accordance with the desired speed of movement of the faceplate 38'.

G handle, asihereinbefore stated, is at zero or neutral position. Thecross beam is at an end of its stroke. Face plate 3% is at an end of itsstroke.

Coincident with the rotating of the buffs, the vertically reciprocablemovement of the cross beam, the transversely reciprocable movement ofthe carrier structure (including the face plate and carrier plate), thework rack and the work carried thereby, and with the travel of thetemplets, there is accomplished a follower action of the carriages whilein. their proximate relation whereby there is a varying of the distancebetween the buifsin-conformity with the flowing contours of the opposedvedges of the work.

For obtaining themovements above referred to,

and for obtaining the coordination and control of Said movements weprovide the combination and arrangement of parts, as follows:

Secured to one of the frame uprights, namely: upright 4! (see Figure 19)is the four-way pilot valve M (hydraulic, hereinbefore mentioned) forstroke of beam, with dogs MI and M2. Carried by said cross beam at itsrear side is an upright bar 23l provided with vertical slot 232 in whichare retained adjustable trips 233 and 234 that are n the path traversedby said dogs respectively.

Mounted on the deck 3| is the hydraulic valve F hereinbefore mentioned(see Figure 7) its piston actuated by a cam 235 driven by shaft 235which is geared as by gear Wheels 231 and 238 to ratiomotor E, and whichsaid valve F gives intermittent action of the face plate 88.

Secured at position underneath the said deck is electric motor C (seeFigure its shaft coupled as at 240 to the shaft of oil pump D, the inletpipe 2 of which said pump leads from the source of supply namely: oiltank 242 located in the lower portion of the machine frame. This pumpsupplie the energy for the entire hydraulic line. J designates a reliefvalve, balanced piston type, for controlling the pressure in thehydraulic circuit.

Operation Push at start button 245 (see Figure 33) energizes motor C andratiomotor E. By action of the oil through vertical cylinder 5| andby-pass valve L the cross-beam is caused to move up and down; and theface plate 88, by valve F, is caused to move crosswise reciprocatively.

Now, upon moving handle of control valve G to position I (see Figure 8)and the consequent release of air pressure into lines I13 (see Figure32) and to cylinders U and V, the carriages are caused to swing thebuffs to and to maintain them in the working or proximal positions. Pushat start button 243 energizes motors A and B and establishes the drivingof the buffs in the confronting directions as indicated by the arrows inFigure 8. Motors A and B may be deenergized by a push of stop button244. Motors C and E may be deenergized by push of stop button 246.

In the procedure of buffing, the action of carriages is had through thefunctioning of the levers I50I55.

Incident to the functioning of thesaid cross beam 6|, and thefunctioning of said face plate 88, the path followed by the work,namely: the quantity of articles carriedby the Work-rack, is elliptical,and the effect of the buffs upon said work is a brushing of the wareequally longitu-' dinally and also transversely of said ware. Therefuse, which is incidental to said brushing, escapes downwardly and ispassed through the space bounded by the wall plates [2 Il 22 and thecheek plates ll1l|8 of the carriages, and is emitted through dischargechute Hi5.

After the ware will have been caused to traverse the zone between thebuffs during a period of about thirty seconds, the desired finish willhave been imparted to the ware.

The operative then returns the handle of Valve G to neutral positionwhence through the action of the air through lines I13 and I'M andcylinders U and V the carriages are caused to swing to remote status andat rest, the driving of the buffs being not interrupted. The operativethen removes the loaded work-rack and its finished ware simply bylifting said rack from the hooks of the carrier structure. In themeantime another Workwork.

rack loaded with unfinished ware is placed in connection with thecarrier structure in the manner as hereinbefore described. G handle isthen moved to position I whence the carriages are swung toward eachother and the buffs brought to working position engaged with the work.

At any time during the procedure of buffing, regulation may be had byvalve R to vary the speed of movement of the cross beam with relation tothe character-and contour of the work. Also regulation may be had, byvalve S, to vary the speed of the cross movement of the face plate withrelation to the character and contour of the All moving parts of themachine are so coordinated that once the necessary adjustments are madeto accommodate the ware to be handled, the operation of the machineproceeds without need of special attention and it performs its'functionsautomatically. The hood structures shown constitute protective andsafety guards against personal injury, and same contribute tomaintenance of :cleanliness. Suitable lubrication of all working partsis provided as by conventional means and not shown. At all times duringoperation of the machine the buffs are under such control that while thedesired degree of bufling pressure, as indicated by air pressure guageTI is had, said pressure is cushioned by the reducing valve ,T, and 'atthe same time the distance between the buffs is caused to vary inaccordance with-the contours of the work which is being op-' eratedupon.

Whereas, my new machine as it is herein illustrated and describedconstitutes a practical embodiment of my invention, it will beunderstood that I do not limit myself to the exact details ofconstruction shown and explained since manifestly the same may bemodified without departure from the spirit and principle of theinvention as defined in the claims.

What I claim as my invention is:

l. A machine ofthe kind described comprising,

in combination, a frame, a cross beam supported connecting the crossbeam and said slides, to

move said slides reciprocatively, and power transm'itting devicesinteracting between the cams and 'said carriages. Y

2. A machine of the kind described comprising, in combination, a frame,a cross beam supported by and vertically reciprocable on said frame, acarrier structure supported by and which is horizontally reciprocable onsaid beam, means to operate the beam, means to operate the carrierstructure, a work-holding rack supported by the carrier structure,opposed carriages pivotally mounted in position below the carrierstructure, and in parallelism with the rack, each carriage beingequidistant from the perpendicular plane of said rack, buffs journaledfor rotation on said carriages, means to drive the buffs, guidewaystructures, slides thereon, profile cams n secured to the slides, powertransmitting devices interconnecting the cross beam and said slides,

'to move said slides reciprocatively,'-sa-id devices 'the free ends ofsaidlevers -'be'in'g engaged '"by said cams, and devices manuallyoperable -to--adjust the distance between the carriages and'said levers.

A machine of the'kind descr ibed compr ising, in combination, a frame, a*crossb'eam $11131 ported by and vertically reciprocable on said frame,a carrier structure suppor ted by and which is horizontallyrec'iprocable on 'said' beam, means to operate the beam, means tooperate thecarrier structure, a work-holding rack supported by theCarrier structure, opposed 'carriages piv- 'o'tally mounted in position:below {the :carrier structure and in "parallelism witl'iithe track,each carriage being equidistant from the 'perpendicular plane of saidrack, buffs jOUIYIIaIIGdDfOr rotation on said carriages, means to drivethe ibuffs,

guideway structures, slides there'on, pro'fi1eircams secured to theslides, power transmitting devices interconnecting the cross beam "andsaid slides, to move said slides recipro'catively, :said

devicesincluding a rack-rod'rdirected downwardly from each end portionof th'e cross beam, two

"pairs of pinions journaled onbearingsfsupported by the frame, each ofsaid mack-rods being in mesh'with 'a pinion :of .each of said :pairs,power transmitting devices interacting between the cams and saidcarriages, :sai'd devices including rack-bars connectedWith'iSa-id'S1idES,:Ea,hTOTISaid rack-bars being inmesh with the :otherfpinion of each of said :pairs, follower levers :fulcrumed adjacenttoand movabletowengagement'with said .carriages, the free ends of saidlevers being engaged by saidcams, and-devices --manual1y -operable toadjust-the distance betweenthe carriages and said levers, means aperableto :control the carriages in the interim during :their -movement throughsaid distance.

4. A vertical'finishingmachine comprising in combination, an uprightframe, a ,cross :beam supported byzand which is vertically reciprocable'on said" frame, "a work-carrier structure :mounted on said beam andwhich is transversely reciprocable thereon, means to move the crossbeam, .means .to control the speed of moVementofIsa-id beam,

.means to limit thelength-ofstroke of said beam,

means to regulate the beammoving means,-means to move the carrier, meansto control thespeed of-the carrier mover means, means to regulate thecarriermover means, opposed carriagesmounted in position below saidcarrier structure, buiTs journaled on the carriages, "means to drive thebull's 'in confronting directions, guideway struc- "tures mounted on theframe, a profile templet cam -'s1idable in each :gui'deway structure,power transmitting connections between the cams'and the said cross beam,and follower'members interengaged with the carriages'to move same, saidfollower members'being engaged with said cams.

5. A vertical finishing machine consisting of a frame embodyingar=standard,'azcross beam slidable vertically on said standard,=aa'face'plate slidably and horizontally retained on said :beam,

means to reciprocate the beam, means "to reciprocate the face plate, :a:icarrier "plate connected to the faceplate and adapted ;to be set inand held at adjusted position .vertically thereon, suspensorydevicesxprojectedo from :the carrier plate, anelongated zworkera'ckiremovably attached to said suspensor devices, carriages arranged in,par-

allel opposed relation :and equidistant from the vertical plane of saidsuspensor devices, a buff mounted for'rotationon each carriage, means torotate the buffs, :a lever with its weight arm engageable by but spaced3, short distance from each carriage, saidlevers being operable to movesaid carriages towardeach other through said short distance and thecarriages being capable of retreatingdevices to predetermine the saidshort distance, .said devices interacting between'the :carriages andsaid levers to ,perm'it'the retreat of said carriage within the range ofsaid-short distance, guideways, slides therein, power transmittingdevices interconnecting the cross beam and said slides .tomove saidslides reciprocatively and in opposed directions profile cams carriedIbysaid slides, said camsbeing engageable bythe free ends of the levers,devices interacting between .said levers and said carriages to permityield of the carriages retractively, means to regulatethe degree of saidyieldymeans to determine .the length of stroke of'said beam, means toVary the length of stroke of the face plate, and means to drivethebufis.

'WARREN G. HELDENBRAND'.

REFERENCES CITED The iollowing references are of record in the file ofthis ,patent:

UNITED STATES PATENTS Number Name Date 77,646 'Norton -May 5,1868 97,664Marsh Dec. "7,1869

7 1,440,386 .Hawes Jan..-2, 1923 1,966,869 'Owen July 1'7, 19342,269,311 Johnson Jan. 6, 1942 2,276,059 Moon .Mar. 10,1942 2,452,863Nicholas -Nov.. 2 ,1948

